It is under pressure to put rates up because it has a target to keep inflation at 2%, but prices are currently rising at 10.7%, more than five times that level.
When interest rates rise, about 1.6 million people on tracker and variable rate deals usually see an immediate increase in their monthly payments.
The increase in the Bank rate from 3% to 3.5% means those on a typical tracker mortgage will pay about £49 more a month. Those on standard variable rate mortgages face a £31 jump.
This comes on top of increases following the previous recent rate rises. Compared with pre-December 2021, average tracker mortgage customers will be paying about £333 more a month, and variable mortgage holders about £210 more.
Three-quarters of mortgage customers hold a fixed-rate mortgage. Their monthly payments may not change immediately, but house buyers – or anyone seeking to remortgage – will have to pay a lot more now than if they had taken out the same mortgage a year ago.
An average two-year fixed deal, which was 2.29% in November 2021, is now just under 6% – a difference of hundreds of pounds each month in repayments for a typical borrower.
You can see how your mortgage may be affected by rising rates with our calculator below.
Credit cards and loans
Bank of England interest rates also influence the amount charged on things such as credit cards, bank loans and car loans.
Lenders could decide to put prices up further, in expectation of higher interest rates in the future.
Savings
Individual banks and building societies usually pass on interest rate rises to customers. The deals being offered now are better than anything seen for years.
But although this means savers get a higher return on their money, interest rates are not keeping up with rising prices.
This means the value of cash savings – its buying power – is falling in real terms.
Why does increasing interest rates help lower inflation?
Raising interest rates helps to control inflation by making it more expensive to borrow money. This encourages people to borrow and spend less, and save more.
However, it is a tough balancing act as the Bank does not want to slow the economy too much. The Bank is predicting that the UK could be in recession – a period of economic decline – for two years which is longer than we have seen in comparable statistics.
Since the global financial crisis of 2008, UK interest rates have been at historically low levels. Last year saw rates of 0.1%.
Are other countries raising their interest rates?
The UK is affected by prices rising across the globe. So there is a limit as to how effective UK interest rate rises will be.
However, other countries are taking a similar approach, and have also been raising interest rates.
The US central bank has announced big rate rises which have taken its key rate to levels not seen for nearly 15 years.
Other central banks around the world have also raised rates, as inflation continues to cause problems in a host of major economies.